Dr. Dennis Mok

Hybrid Modeling and Simulation Platform for Rapid Prototyping and Testing of Ad-hoc Wireless Networks Presented to:

Telcordia Contact: Dennis Mok, Ph.D.

Michael Maszczak

Principal Systems Engineer Senior Systems Engineer Telcordia Technologies Inc.

Telcordia Technologies Inc.

[email protected]

[email protected]

(703) 875-2286 October 27, 2011

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The Hybrid Concept Server Hardware

Server Models

Modeling Software

Transport Models Router Models Physical Routers

Physical Transports

SITL

2

Desired Prototyping/Testing Characteristics Realism

Performance

 Physical - High  Modeling - Low  Hybrid - Medium

 Physical - High  Modeling - Low  Hybrid - Medium

Scalability

Cost

 Physical - Low  Modeling - High  Hybrid - Medium

 Physical - High  Modeling - Low  Hybrid - Medium

3

SITL (System-In-The-Loop) • SITL is an add-on module for OPNET's modeling and simulation products • SITL provides a simple "plug and play" interface that connects live applications or network devices, such as servers and routers, to OPNET simulations • Real Sim Scenario: provides a communication path between a simulated network element and a real network element • Real Sim Real Scenario: provides transparent transport of traffic between real network elements © 2011 OPNET Technologies, Inc. OPNET is a registered trademark of OPNET Technologies, Inc 4

REAL to SIM Scenario REAL

SIM

SITL

Real Network Elements talk to Simulated Network Elements Protocol interaction between Real and Simulated network elements

Simulated Network Elements talk to Simulated Network Elements Protocol interaction between Simulated network elements 5

REAL to SIM to REAL Scenario REAL Real Network Elements talk to Real Network Elements Protocol interaction between Real network elements

SITL

SIM

SITL

Simulated Network Elements talk to Simulated Network Elements Protocol interaction between Simulated network elements 6

REAL

Hybrid Modeling and Simulation Platform SIM

REAL SITL

IMS Functionalities

MS1

REAL

I-CSCF

BS1

Physical Source

S-CSCF P-CSCF

IP

SITL

HSS AS

BS2 SITL Physical Destination

PCRF

MS2

Physical IMS Nodes

OPNET Simulation Signaling Media

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End-to-End Prototyping Framework IMS Stack S-CSCF I-CSCF P-CSCF HSS AS PCRF

IMS Lab IP Lab

OPNET Access Network Models

8

Example Testbed Hardware Configuration External Interface Internet P2

C1

P1

PE1

Ethernet Switch1

S-CSCF I-CSCF P-CSCF HSS AS PCRF

C2

P-CSCF1

Ethernet Switch2

Ethernet Switch3

SITL Host S1 UE1

PE2

P-CSCF2

S2

UE2

UE3 9

UE4

End-to-End Network Prototyping

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End-to-End Performance Features • Access Control Algorithm

• Server Processing

• Transport Queueing I-CSCF

S-CSCF

HSS

P-CSCF

• Management Queueing GETS-AS

IMS Prototyping • Security • Call Flows

BS

BS

IP v4/v6 Prototyping • Multi-Domain Transport • Quality of Service (DiffServ)

Access Modeling • EvDO • WiMAX • LTE • Ad-hoc Mobile

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LTE Access Performance Features Ad-hoc UE-UE Direct Communications LTE UE Access Schemes

EPC

Uu

S1-MME S11

MME

S1-U

S5

IP Network

eNB

UE

S-GW

PDN-GW

X2

REAL eNB

SIM LTE UE Mobility Simulation

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Visualization of Prototyped Network

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Network Performance Dashboard

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End-to-End Performance Measurement

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Experience the Performance  Transmitted Video under Normal Load

 Transmitted Video under Congestion

 Transmitted Audio under Normal Load

 Transmitted Audio under Congestion

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Continuously Evolving Hybrid Platform

Systems Engineering StagesEngineering Process NGN Priority Services Systems Definition

Design

Development

Deployment

Modeling Modeling Prototyping

Testing

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Q&A 18